I'm not quite sure why I didn't think of this sooner, maybe skimming through the ritual section in Tome of Blood kicked my brain into gear (a little).

When a psyker is doing a ritual (summoning a daemon for instance) is this considered a Focus Power Test? Most Focus Power Tests run off of a WP test or INT + Psyniscience; even though rituals are INT + F. Lore: Daemonolotgy (or Warp) you're still invoking the power of the warp and the Dark Gods. If a ritual is considered a Focus Power Test wouldn't the Psy Rating x5 be added to the test?

While there are many tests surrounding rituals that are Focus Power tests, most ritual Forbidden Lore tests are not among them.

They're not Focus Power Tests. Only test in regards to rituals where you add 5 x PR is the daemonic mastery test when summoning daemons is on table.